Happy 20th Hubble Space Telescope

Space near the Sun is mostly empty, devoid of gas and stars. But travel 7500 light years in the direction of the constellation Carina and you'll slam into one of the largest and most complex star-forming regions in the galaxy: the sprawling Carina nebula. Massive stars being born there blast out radiation and winds that sculpt the surrounding material, creating weird and wonderful shapes.

So what better way for astronomers to celebrate the Hubble Space Telescope's 20th year in orbit than to use it to take a huge mosaic of Carina? This astonishing portrait shows the towering pillars of gas and dust being eaten away by cosmic erosion; the narrow, focused jets of material blasting away from stars eating away at their cocoons; ribbons and sheets of compressed gas lighting up space; and the nascent stars themselves as they turn on for the first time.